Distributed Spatial-data Share Service Model with Web Services

On the basis of analyzing solutions on spatial-data access and storage of main GIS software, the paper presents the design of a distributed spatial-data share service model with robust XML Web service. In the model, there are four basic units, spatial-data service, data transform service, data access agent and spatial-data catalog service, which compose a flexible and distributed spatial-data managing and sharing architecture. It is important to reuse the software and data on the running system, the paper focuses how to use Web service wrap the existing data engine and database.